YOU SAID:
We couldn't drive in the deep snow.
INTO JAPANESE
深い雪の中では車を運転できませんでした。
BACK INTO ENGLISH
I couldn't drive my car in the deep snow.
INTO JAPANESE
深い雪の中で車を運転することができませんでした。
BACK INTO ENGLISH
I couldn't drive my car in the deep snow.
That didn't even make that much sense in English.